Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo KOG KOG-366T0S KOG-366T0S
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DAEWOO ELECTRONICS CO., LTD.
686, AHYEON-DONG MAPO-GU SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX: DWELEC K28177-8
CABLE: "DAEWOOELEC"
FAX: 02) 590-6291
TEL: 02) 360-7114/590-6151~5
http://www.dwe. daewoo.co.kr
S/M NO. : PRINTED DATE: JUNE 1998
Service Manual
Microwave Oven
Model : KOG-366T0S
DAEWOO ELECTRONICS CO., LTD.
OVERSEAS SERVICE DEPT.
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE
ENERGY
(a) Do not operate or allow the oven to be operated with the door opened.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or
other microwave source, and make repairs if necessary: (1) Interlock operation, (2) proper door
closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening
of hinges and latches, and (5) evidence of dropping or abuse.
(c) Before turning on microwave power for any service test or inspection within the microwave
generating compartments, check the magnetron, wave guide or transmission line, and cavity for
proper alignment, integrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal and microwave
generation and transmission systems shall be repaired, replaced, or adjusted by procedures
described in this manual before the oven is released to the owner.
(e) A microwave leakage check to verify compliance with the federal performance standard should be
performed on each oven prior to release to the owner.
TABLE OF CONTENTS
PROPER USE AND SERVICE PRECAUTIONS.........................................................................................................2
SPECIFICATIONS........................................................................................................................................................3
FEATURES DIAGRAM ................................................................................................................................................4
EARTHING INSTRUCTIONS.......................................................................................................................................5
INSTALLATION ............................................................................................................................................................5
OPERATION PROCEDURE ........................................................................................................................................6
CONTROLS..................................................................................................................................................................7
INTERLOCK MECHINISM FUNCTIONS AND ADJUSTMENTS..............................................................................17
MEASUREMENT OF THE MICROWAVE OUTPUT POWER..................................................................................19
WIRING DIAGRAM ....................................................................................................................................................21
CIRCUIT DESCRIPTION ...........................................................................................................................................23
SAFTY PRECAUTIONS FOR DISASSEMBLY AND REPAIR .................................................................................26
DISASSEMBLY AND ASSEMBLY.............................................................................................................................27
TROUBLE SHOOTING GUIDE .................................................................................................................................33
KEYBOARD CHECK PROCEDURE .........................................................................................................................38
COMPONENT TEST PROCEDURE .........................................................................................................................39
SAFETY INTERLOCK CONTINUITY TEST..............................................................................................................40
PRINTED WIRING BOARD .......................................................................................................................................41
CIRCUIT CHECK PROCEDURE...............................................................................................................................41
P.C.B. CIRCUIT DIAGRAM........................................................................................................................................45
COMPONENT INFORMATION .................................................................................................................................46
PRINTED CIRCUITS BOARD....................................................................................................................................47
P.C.B. LOCATION NO ...............................................................................................................................................49
EXPLODED AND PARTS LIST .................................................................................................................................51
1
CAUTION : This Device is to be Serviced Only by Properly Qualified Service Personnel. Consult the Service
Manual for Proper Service Procedures to Assure Continued Safety Operation and for
Precautions to be Taken to Avoid Possible Exposure to Excessive Microwave Energy.
PROPER USE SERVICE PRECAUTIONS
1. For Safe Operation
Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking
and may cause serious bodily injury to the operator.
IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE.
(Only a trained service personnel should make repairs.)
1) A broken door hinge.
2) A broken door viewing screen.
3) A broken front panel, oven cavity.
4) A loosened door lock.
5) A broken door lock.
The door gasket plate and oven cavity surface be kept clean.
No grease, soil or spatter should be allowed to build up on these surfaces or inside the oven.
DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN. The microwave oven has
concealed switches to make sure the power is turned off when the door is opened. Do not attempt to defeat
them.
DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.
2. For Safe Service Procedures.
1) If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing
the oven.
2) If any certified oven unit is found to serivicing, a microwave emission check should be performed prior to
servicing the oven.
(a) inform the manufacturer, importer or assembler,
(b) repair the unit at no cost to the owner,
(c) attempt to ascertain the cause of the excessive leakage,
(d) tell the owner of the unit not to use it until the oven has been brought into compliance.
3) If the oven operates with the door opened, the service person should tell the user not to operate the oven and
contact the manufacturer and CDRH immediately.
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT BE EXPOSED TO THE MICROWAVE ENERGY WHICH MAY RADIATE
FROM THE MAGNETRON OR OTHER MICROWAVE GENERATING DEVICE IF IT IS MIPROPERLY
USED OR CONNECTED. ALL INPUT AND OUTPUT MICROWAVE CONNECTIONS. WAVEGUIDE,
FLANGES AND GASKETS MUST BE SECURE. NEVER OPERATE THE DEVICE WITHOUT A
MICROWAVE ENERGY ABSORNING LOAD ATTACHED. NEVER LOOK INTO AN OPEN
WAVEGUIDE OR ANTENNA WHILE THE DEVICE IS ENERGIZED.
2
SPECIFICATIONS
ITEM SPECIFICATION
POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH EARTHING
MICROWAVE 1200 W
POWER
GRILL 1050 W
CONSUMPTION
COMBINATION 2200 W
MICROWAVE ENERGY OUTPUT 800 W(IEC 705)
MICROWAVE FREQUENCY 2450 MHz
OUTSIDE DIMENSIONS (W X H X D) 465 X 274 X 379 mm
CAVITY DIMENSIONS (W X H X D) 290X 200 X 290 mm
NET WEIGHT 14.5 Kg
TIMER 60 min
FUNCTION SELECTIONS MICROWAVE/GRILL/COMBINATION
MICROWAVE POWER LEVELS 5 LEVELS
* Specifications subject to change without notice.
3
FEATURES DIAGRAM
1 Door latch - When the door is closed it will automatically lock shut. If the door is opened while the oven is
operating, magnetron will immediately stop operating.
2 Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave
leakage..
3 Oven cavity.
4 Spatter shield - Protects the microwave outlet from splashed of cooking foods.
5 Safety interlock system.
6 Door viewing screen - Allows viewing of food. The screen is designed so that light can pass through, but
not the microwaves.
7 Glass cooking tray - Made of special heat resistant glass. Food in a proper receptacle is placed on this tray
for cooking.
8 Roller guide - This must always be used for cooking together with the glass cooking tray.
9 Display - Cooking time, power level, present time are displayed.
0qw Function buttons - Used to select desired oven operation. : MICROWAVE, AUTOCOOK, DEFROST.
w Grill / Combi button - Used to set the Grill or Combi mode.
e Start button - Used to start a selected operation. When lamp blinks, press the start button.
r Speedy cook button - Used to set desired time (It is incressed 30 seconds)
t Stop/clear button - Used to pause or clear all information manually put into the oven control panel except
clock.
y u More/Less button - Used to select auto cook time. (More/less 10% of auto cook time)
i Clock button - Used to set and recall the time of day.
o Dial knob - Used to set the cooking time, weight and quantity.
p Guide lamp - When blinking it informs you to be ready to operate dial knob.
a Reflector (Insulator Heater)
s Heating Element
d Metal Rack
4
EARTHING INSTRUCTIONS
This appliance must be earthed. In the event of an electrical short circuit, earthing reduces the risk of electric shock
by providing an escape, wire for the electric current. This appliances is equipped with a cord having a earthing wire
with a earthing plug. The plug must be plugged into an outlet that is properly installed and earthed.
CAUTION : Improper use of the earthing pulg can result in a risk of electric shock. consult an qualified
electrician or serviceman if the earthing instructions are not completely understood, or if doubt
extension to whether the appliance is properly earthed. If it necessary to use an extension cord,
use only a 3-wire extension cord that has a 3-blade earthing plug, and a 3-slot receptacle that
will accept the plug on the appliance. The marked rating of the extension cord should be equal
to or greater than the electrical rating of the appliance.
INSTALLATION
Steady, flat location
1 This oven should be set on a steady, flat surface.
This oven is designed for counter top use only.
Leave space behind and side
2 All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and,
eventually, oven failure.
Away from Radio and TV sets
3 Poor television reception and radio interference may result if the oven is located close to a TV, Radio, or
antenna, feeder and so on.
osition the oven as far from them as possible.
Away from heating appliances and water taps
4 Keep the oven away from hot air, steam or splash when choosing a place to position it, or the insulation might
be adversely affected and breakdowns occur.
Power supply
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